Grain-filling problem in super rice
WebAbstract Poor grain filling of inferior spikelets is becoming a severe problem in some super rice varieties with large panicles. Moderate soil drying (MD) after pollination has been proven to be a practical strategy to promote grain filling. However, the molecular mechanisms underlying this phenomenon remain largely unexplored. WebApr 5, 2024 · Grain-filling, as the final growth stage of rice, is sensitive to environmental temperature change. Previous studies mainly concerned about the effects of high …
Grain-filling problem in super rice
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WebNov 11, 2024 · Poor grain filling by hybrid japonica rice (Oryza sativa) is a major agricultural problem. It has previously been reported that the rice accession Ludao, a wild-type japonica rice grown naturally in the …
WebAug 26, 2024 · We also compared these features of this line with an earlier super rice cultivar, LYP9 (Zou 2003) and Yongyou12# ... Growth analysis in the process of grain filling in rice. Acta Agron Sin 14:182–193. Google Scholar Zou J (2003) Breeding of two-line hybrid rice variety'Liangyoupeijiu'and preliminary studies on its cultivation characters. Sci ... WebDec 18, 2024 · SUMMARY. Poor grain filling of inferior spikelets is becoming a severe problem in some super rice varieties with large panicles. Moderate soil drying (MD) …
WebMay 22, 2024 · Indeed, the application of exogenous IAA significantly improved grain filling under excessive nitrogen conditions (Figs. 6 and 8), while defects in OsYUC11, a key gene for IAA biosynthesis in... WebJan 1, 2010 · Conventional thinking to explain the poor grain-filling is the consequence of carbon limitation. Recent studies, however, have shown that carbohydrate supply should …
WebMay 1, 2024 · Super rice breeding in Japan aimed to increase the yield potential of rice by 50%, while NPT breeding at IRRI aimed to develop varieties with a yield potential of 15 t ha−1 (Khush 1995). By contrast, the objectives of China’s Super Rice Breeding Program were the following (Cheng et al. 1998): (1) Develop super rice varieties with a ...
WebNov 2, 2005 · These results indicate that increased grain filling rate is mainly attributable to enhanced sink activity through regulation of key enzymes involved in sucrose-to-starch … cshc in miningWebJul 21, 2024 · The results showed that shading after heading significantly decreased the spikelet-filling rate and grain weight, as well as the dry weight of grains panicle –1, 30 d … cshc legislationWebOct 15, 2024 · Grain filling is determined by a complex sink-source balance (Okamura et al. 2024 ). In modern large panicle rice, significant asynchronicity of superior spikelet and inferior spikelet filling can … eagan home depotWebJun 28, 2010 · Several studies have shown that variations in grain filling between the superior and inferior spikelets are mediated by plant hormones ( Yang et al., 2003 a, 2006) and cytokinin levels in rice spikelets are significantly correlated with seed development ( Yang et al., 2002 a; Zhang et al., 2009 a ). eagan housesWebConventional thinking to explain the poor grain-filling is the consequence of carbon limitation. Recent studies, however, have shown that carbohydrate supply should not be … cshc leesburgWebApr 21, 2024 · However, the high yield potential of ‘super’ rice cultivars, which have numerous spikelets with a large capacity, frequently fails to manifest in high grain yield due to either sterility or slow or poor filling of inferior spikelets. eagan hs hockeyStarch in rice grains contributes 80–90% of the final dry weight of an unpolished grain (Yoshida, 1972; Duan and Sun, 2005). Grain-filling is actually a process of starch accumulation and it has been reported that there are 33 major enzymes involved in the metabolism of carbohydrates in developing rice endosperm … See more Rice (Oryza sativa L.) is one of the most important food crops in the world. Providing 35–60% of the dietary calories, rice is consumed by … See more Grain-filling in cereals depends on carbon from two sources: current assimilates and assimilates redistributed from reserve pools in vegetative tissues either pre- or post-anthesis (Kobata et al., 1992; Schnyder, 1993; … See more The slow grain-filling rate and low grain weight of inferior spikelets have often been attributed to a limitation in carbohydrate supply (Sikder and Gupta, 1976; Murty and Murty, 1982; Zhu … See more Poor grain-filling of the later-flowering inferior spikelets of modern rice cultivars with numerous spikelets per panicle, especially for ‘super’ rice, is a serious problem and … See more eagan hy vee pharmacy